Use uvicorn on macOS to avoid making the user set env variable

.gitignore

@@ -6,6 +6,9 @@ yarn-debug.log*
 yarn-error.log*
 lerna-debug.log*
 
+# Mac
+.DS_Store
+
 # Diagnostic reports (https://nodejs.org/api/report.html)
 report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
 
@@ -230,5 +233,5 @@ venv.bak/
 .dmypy.json
 dmypy.json
 
-# Pyre type checker
-.pyre/
+# Poetry 
+.testenv/*

Makefile

@@ -18,7 +18,7 @@ format:
 lint:
 	poetry run mypy .
 	poetry run black . --check
-	poetry run ruff .
+	poetry run ruff . --fix
 
 install_frontend:
 	cd langflow/frontend && npm install
@@ -29,7 +29,13 @@ build_frontend:
 build:
 	make install_frontend
 	make build_frontend
+	cp -r langflow/frontend/build langflow/backend/langflow_backend/frontend
 	poetry build --format sdist
+	rm -rf langflow/backend/langflow_backend/frontend
+
+publish:
+	make build
+	poetry publish
 
 help:
 	@echo '----'

README.md

@@ -4,21 +4,17 @@
 
 ~ A User Interface For [LangChain](https://github.com/hwchase17/langchain) ~
 
-
 <p>
 <img alt="GitHub Contributors" src="https://img.shields.io/github/contributors/logspace-ai/langflow" />
 <img alt="GitHub Last Commit" src="https://img.shields.io/github/last-commit/logspace-ai/langflow" />
-<!-- <img alt="GitHub Language Count" src="https://img.shields.io/github/languages/count/logspace-ai/langflow" /> -->
 <img alt="" src="https://img.shields.io/github/repo-size/logspace-ai/langflow" />
-<!-- <img alt="GitHub Issues" src="https://img.shields.io/github/issues/logspace-ai/langflow" /> -->
-<!-- <img alt="GitHub Closed Issues" src="https://img.shields.io/github/issues-closed/logspace-ai/langflow" /> -->
-<!-- <img alt="GitHub Pull Requests" src="https://img.shields.io/github/issues-pr/logspace-ai/langflow" /> -->
-<!-- <img alt="GitHub Closed Pull Requests" src="https://img.shields.io/github/issues-pr-closed/logspace-ai/langflow" />  -->
-<!-- <img alt="GitHub Commit Activity (Year)" src="https://img.shields.io/github/commit-activity/y/logspace-ai/langflow" /> -->
+<img alt="GitHub Issues" src="https://img.shields.io/github/issues/logspace-ai/langflow" />
+<img alt="GitHub Pull Requests" src="https://img.shields.io/github/issues-pr/logspace-ai/langflow" />
 <img alt="Github License" src="https://img.shields.io/github/license/logspace-ai/langflow" />  
 </p>
 
-![LangFlow Logo](https://github.com/logspace-ai/langflow/blob/main/img/langflow-demo.gif)
+<a href="https://github.com/logspace-ai/langflow">
+    <img width="100%" src="https://github.com/logspace-ai/langflow/blob/main/img/langflow-demo.gif?raw=true"></a>
 
 LangFlow is a GUI for [LangChain](https://github.com/hwchase17/langchain), designed with [react-flow](https://github.com/wbkd/react-flow) to provide an effortless way to experiment and prototype flows with drag-and-drop components and a chat box.
 
@@ -32,18 +28,16 @@ Next, run:
 
 `python -m langflow` or just `langflow`
 
-
 ## 🎨 Creating Flows
 
-Creating flows with LangFlow is easy. Simply drag sidebar components onto the canvas and connect them together to create your pipeline. LangFlow provides a range of [LangChain components](https://langchain.readthedocs.io/en/latest/reference.html) to choose from, including LLMs, prompt serializers, agents, and chains. 
+Creating flows with LangFlow is easy. Simply drag sidebar components onto the canvas and connect them together to create your pipeline. LangFlow provides a range of [LangChain components](https://langchain.readthedocs.io/en/latest/reference.html) to choose from, including LLMs, prompt serializers, agents, and chains.
 
 Explore by editing prompt parameters, link chains and agents, track an agent's thought process, and export your flow.
 
 
 ## 👋 Contributing
 
-We welcome contributions from developers of all levels to our open-source project on GitHub. If you'd like to contribute, please check our contributing guidelines and help make LangFlow more accessible. 
-
+We welcome contributions from developers of all levels to our open-source project on GitHub. If you'd like to contribute, please check our contributing guidelines and help make LangFlow more accessible.
 
 ## 📄 License
 

langflow/backend/.gitignore

@@ -4,6 +4,9 @@ __pycache__/
 *$py.class
 notebooks
 
+# frontend
+langflow_backend/frontend
+
 # C extensions
 *.so
 

langflow/backend/langflow_backend/__init__.py

@@ -0,0 +1 @@
+from langflow_backend.interface.loading import load_flow_from_json  # noqa

langflow/__main__.py → langflow/backend/langflow_backend/__main__.py

@@ -1,42 +1,51 @@
 import multiprocessing
+import platform
+
 from langflow_backend.main import create_app
 
 import typer
 from fastapi.staticfiles import StaticFiles
 from pathlib import Path
 
-from langflow.server import LangflowApplication
+
+def get_number_of_workers(workers=None):
+    if workers == -1:
+        workers = (multiprocessing.cpu_count() * 2) + 1
+    return workers
 
 
 def serve(
-    workers: int = None,
-    timeout: int = None,
+    workers: int = 1,
+    timeout: int = 60,
 ):
     app = create_app()
     # get the directory of the current file
     path = Path(__file__).parent
-    static_files_dir = path / "frontend/build"
+    static_files_dir = path / "frontend"
     app.mount(
         "/",
         StaticFiles(directory=static_files_dir, html=True),
         name="static",
     )
-    if not workers:
-        workers = 1
-    elif workers == -1:
-        workers = (multiprocessing.cpu_count() * 2) + 1
-
-    if not timeout:
-        timeout = 60
 
+    host = "127.0.0.1"
+    port = 5003
     options = {
-        "bind": "0.0.0.0:5003",
-        "workers": workers,
+        "bind": f"{host}:{port}",
+        "workers": get_number_of_workers(workers),
         "worker_class": "uvicorn.workers.UvicornWorker",
         "timeout": timeout,
     }
 
-    LangflowApplication(app, options).run()
+    if platform.system() == "Darwin":
+        # Run using uvicorn on MacOS
+        import uvicorn
+
+        uvicorn.run(app, host=host, port=port, log_level="info")
+    else:
+        from langflow_backend.server import LangflowApplication
+
+        LangflowApplication(app, options).run()
 
 
 def main():

langflow/backend/langflow_backend/interface/signature.py

@@ -120,7 +120,7 @@ def get_tool_signature(name: str):
         template["aiosession"]["required"] = False
         template["aiosession"]["show"] = False
 
-    template["_type"] = tool_type
+    template["_type"] = tool_type  # type: ignore
 
     return {
         "template": template,

langflow/backend/langflow_backend/main.py

@@ -33,4 +33,4 @@ def create_app():
 if __name__ == "__main__":
     import uvicorn
 
-    uvicorn.run(app, host="0.0.0.0", port=5003)
+    uvicorn.run(app, host="127.0.0.1", port=5003)

langflow/server.py → langflow/backend/langflow_backend/server.py

@@ -1,4 +1,4 @@
-from gunicorn.app.base import BaseApplication
+from gunicorn.app.base import BaseApplication  # type: ignore
 
 
 class LangflowApplication(BaseApplication):